from urllib.parse import urlencode

import requests

url = "http://login.aspx?"
ID = "simon"
PWD = "123"
VC = "验证码内容"
params = {
    "id": ID,
    "password": PWD,
    "validationcode": VC,
}
complete_url = url + urlencode(params)
f = requests.get(url=complete_url)
